Studying The Settlement of Backfill Sandy Soil Behind Retaining Wall Under Dynamic Loads

Hamdi, Reham E.; Fattah, Mohamed Youssef; Aswad, Mohammed F.

doi:10.30684/etj.v38i7a.528

Cited by 7 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Seismic excitation caused an outward (rotational) movement of the wall. This movement is similar to that of a rigid rotation of a cantilever wall [96] and is also visible in the scaled deformed shape (scaled to 10) (see Figure 9b). Tall structures can undergo several modes of vibration, but the fundamental period or first mode is usually the most significant for structures with moderate height.…”

Section: Comparison Of Mse Wall Deformed Shape In Static and Seismic ...supporting

confidence: 62%

Seismic Response of MSE Walls with Various Reinforcement Configurations: Effect of Input Ground Motion Frequency

Yildirim,

Turkel,

Guler

2024

Buildings

View full text Add to dashboard Cite

Mechanically stabilized earth (MSE) walls perform well under earthquake loads, and hence they are preferred in earthquake-prone regions. The multifaceted load transfer between the components of the MSE wall under seismic loads can be captured using numerical analysis. This study presents the results of a series of numerical analyses performed to investigate the effects of the frequency of the input ground motion on the seismic response of MSE walls. MSE wall design configurations were prepared using various reinforcement designs (length, vertical spacing, and stiffness). A frequent wall height of 8 m was selected for the analysis. Using two-dimensional finite element analysis, each MSE model was excited with seven (7) different input ground motion accelerograms with equal Arias Intensity, but with different frequencies ranging between 1 Hz and 8 Hz. The results of the numerical analyses indicated rotation at the top of the MSE wall in seismic conditions. The frequency versus acceleration plot for a point close to the top of the MSE wall indicated peaks for the excitations with frequencies f = 1.5 Hz and f = 4 Hz, which are close to the estimated natural frequency of the overall model (including the foundation soil) and the MSE wall, respectively. The highest normalized acceleration amplification factor solely within the MSE wall was recorded as 1.86 for the excitation with a frequency equivalent to its fundamental frequency (f @ 4 Hz). In this study, the 8 m high MSE wall models placed on a firm clayey foundation soil with the reinforcement parameters with length over height ratio in 0.5–1 range, axial stiffness in 600–1200 kPa range, and reinforcement vertical spacing in0.4–0.6 m range performed satisfactorily under moderate seismic loads.

show abstract

Section: Comparison Of Mse Wall Deformed Shape In Static and Seismic ...supporting

confidence: 62%

Seismic Response of MSE Walls with Various Reinforcement Configurations: Effect of Input Ground Motion Frequency

Yildirim,

Turkel,

Guler

2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Figure (17), when increasing the frequency to 1 Hz and load amplitude 10 kN, the maximum stress is reduced by 20.4%. The maximum stress is reduced by 35.5%, when increasing load amplitude to 15 kN as shown in Figure 18, But when increasing the frequency to 1 Hz and load amplitude 15 kN, the maximum stress is reduced by 31.5% as shown in Figure 19.…”

Section: * Stress Results For Reinforced Models Ss2 Type Of Geogrid Used Between Base Layer and Subgradementioning

confidence: 91%

“…Figure 30shows that the maximum displacement increases by 12.7%, when increasing the load amplitude to 15 kN and frequency is 0.5 Hz. The vertical displacement increases with the load amplitude [17].…”

Section: Displacement Results For Reinforced Modelsmentioning

confidence: 95%

Function and Application of Geogrid in Flexible Pavement under Dynamic Load

Jebur¹,

Fattah²,

Abduljabbar³

2021

ETJ

View full text Add to dashboard Cite

“…The settlement both gradually reach the same maximum value and the settlement speed is close to 0. The vertical settlement is increasing with the load amplitude [24] . Fig.…”

Section: Table 3 Creep Model Parameters Of Geogrid Considering Damagementioning

confidence: 93%

Mechanical properties of re-packed reinforced Earth embankment during service stage

Hou

Wang

Huang

et al. 2021

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

： Problems of large settlements and uneven settlements on the road always happen during service stage. Reinforced embankments can reduce these problems. But currently the study on the mechanical properties of reinforced embankments during service stage are so few, and lack of measured data. This study uses numerical simulation and on-site measured data analysis to set up a geogrid creep damage model and traffic load model. Based on the analysis of the mechanical properties of reinforced embankment under the conditions of new test section and widening test section, the influence laws of traffic load amplitude, frequency and driving interval on reinforced embankment are obtained. When the traffic load amplitude is 2 0 , there is little difference in settlement between the two test sections, but the settlement ratio gets the maximum value of 0.028 mm/d when the amplitude is 2 0 . When the traffic load frequency increases from 1 Hz to 4 Hz, the embankment settlement is in the sudden settlement stage, and the settlement is almost stable after 4 Hz. When the driving interval is greater than 4 s, the rebound value and rebound time are almost stable.

show abstract

Studying The Settlement of Backfill Sandy Soil Behind Retaining Wall Under Dynamic Loads

Cited by 7 publications

References 4 publications

Seismic Response of MSE Walls with Various Reinforcement Configurations: Effect of Input Ground Motion Frequency

Seismic Response of MSE Walls with Various Reinforcement Configurations: Effect of Input Ground Motion Frequency

Function and Application of Geogrid in Flexible Pavement under Dynamic Load

Mechanical properties of re-packed reinforced Earth embankment during service stage

Contact Info

Product

Resources

About